Also splitting audio at mike levels can be a real problem as one "split"
can appear as an input to the other side. Mikes should be connected
direct to one radio only.
As Don stated, PL-259 connectors need to be more than finger tight. I've
found many good looking PL-259 connectors which are exactly that, "good
looking" but found to be poor conductors offering poor RF path and
connections.
73
Bob, K4TAX
On 12/30/2015 6:47 PM, Don Wilhelm wrote:
Where did you add the common mode choke? What is the choking
impedance of that common mode choke? Take a look at the writings of
Jim Brown K9YC for effective common mode chokes.
The fact that you do not have the problem with the MH3 microphone
strongly suggests that there is not a problem with the KX3 or KXPA100.
Both microphones you mentioned are dynamic type and should have Bias
turned off.
You might check the coax connections and your coax jumpers. PL-259
connectors should be fully seated and be given just a bit more
tightening than "finger tight" to make an effective connection to the
coax shield. Use pliers to snug them up a bit after making them
finger tight.
Try different coax jumpers - it is not uncommon to have the connection
to the shield fail.
73,
Don W3FPR
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